Large Dragon, Unaligned
Shared Resistances. When you summon the dragon, choose one of its damage resistances. You have resistance to the chosen damage type until the spell ends.
Multiattack. The dragon uses its Breath Weapon, and it makes a number of Bite and Claw attacks equal to half the spell’s level (rounded down). Bite and Claw. Melee Weapon Attack:your spell attack modifier to hit, reach 10 ft., one target. Hit:1d6 + 4 + the spell’s level piercing damage. Breath Weapon. The dragon exhales a stream of multicolored energy in a 30-foot cone. Each creature in that area must make a Dexterity saving throw, taking 2d6damage of your choice of a damage type this dragon has resistance to on a failed save, or half as much damage on a successful one.